Combined firing valve, heater, and blowback apparatus for oil-fuelburning installations



May 27 1924.

J. O'DON LL ET AL COMBINED FIRI ALVE, HEAT AND BLOWB APPARATUS FOR FUEL BURNING INSTAL Filed Jan. 16 192 2 Sheets-Sheet. l

' (Zoe/7&6. 'f I '7'? may M 1 I Ii I I May 27, 1924. 1,495,870

' 4 J. ODONNELL ET AL QOMBINED FIRING VALVE, HEATER, AND BLOWBACK APPA OIL FUEL BURNING INSTALLATIONS Filed Jan. 16 .1932 2 Sheets-Sheet 2 RATUS FOR Patented May 27, 1924.

v 1,495,870 PATENT v OFFICE.

JAMES ODONNELL, or MANCHESTER, ENGLAND, Ann PETER FRASER MeL on," or

- GLASGOW, SCOTLAND.

COMBINED FIRING VALVE, HEATER, AND BLOWBAGK ABPARATU'S FOR BURNING INSTALLATIONS.

Application filed January 16, 1922, Serial No, 529,671.

To all whom it may concern Be it known that we, JAMES ODONNELL and PETER FRASER MoLEoD, subjects of King George V of Great Britain, residing, respectively, at Manchester, England, and Glasgow,

According to the invention two members or cages, each divided into two chambers or compartments, are secured face to face with a rotary disc or valve mounted between them and making good joints with the adj acent faces of the respective cages;

The chambers of one cage are respectively in communication with an oil supply tank and with a steam supply from a suitable generator, and the chambers of the othercage communicate respectively with an oil pipe and witha steam'pipe leading to the burner or burners.-

In the inner' wall of the oil reception chamber adjacent to the rotary valve are two suitably disposed'openi'ngs of appropriate sizes to admitof the passage of a main oil supply and of a'pilot oil supply, Whilst the'inner wall of'the oil delivery chamber, which is opposedto the oil reception'chamber, has two similar openings inalignment with those previously named.

Similarly the steam reception chamber has two suitably disposed openings of vappropriate sizes to admit of the passage of a main steam supply and of a pilot steam supply,

. and the steam delivery chamber has two similar openings in alignment with those in the reception chamber.

The'centres of all the openings are disposed at an equal distance radially from the centre line of the cages, and the rotary valve or disc has a series of suitably disposed passages which by appropriate manipulation of the valve can be either moved from opposite the chamber openings to shut off the oil and steam supplies, or can open up the main oil 'pipe leading to theburner; s

OIL- FUEL- j and main steam communicationsbetween the chambers, or in a third position can close the main oil and steam communications and open up the pilot oil and" steam communications.

A suitably controlled inlet from asteam supply communicates with the oil reception chamber and, when the valve disc isiin appropriate position enables steam to be blown back through the. oil reception chamber and the pipe, leading from the oil tank'fonfthe purpose of clearingaW'ay obstructions, :ori

through'the oil delivery chamber'and the oil The two cages and the interposed valve disc are preferably held together by a spindle. which forms a pivot'for the rotary valve, suitablepackings being employed between the cages: and thezvalve to make tight joints, and means are also provided'to' hold the valve in the desired position.

The inventionwill be more fully described with referencetothe accompanying drawing in which Fig. 1 is a frontview, partly in section of a combined-heaten'firing valve andblowback'device constructed according to their)- vent-ion, whilst v r Fig. 2 is a section on the lineA, A Fig. 1. Referring to the drawing'a represents a cage or memberf divided by a central rib a into two chambers a and a the chamber a having a communication a leading to anoil supply tank, and the chamber a having a communication a to a suitable steam sup-ply. A'second cageor member. 6 is similarly divided by a'central rib 5 into two chain hers and b3, the chamber 6 having,

an oil delivery pipe b leading to the burner or burners and the Chamberb a steam delivery pipe 6 also leading tothe burner or burners;

The inner faces aw and baa of the cages'or members a'and b are flat as shewn and between them is placed-a rotary disc or'valve o.

A spindle d has a circular central part d which forms a pivot forthe valve'disc c, and

squared portions (Z d which pass through bosses a and b in the ribs (1, b respectively. Nuts 6, c on the screwed ends of the spindle enable the cages or members to be tightened up against the faces of the rotary valve disc, and packing rings f, f of suitable material and h embedded in grooves, in the valve disc and in the cages or members respectively, serve to make the joints good and prevent leakage.

In the wall of chamber a are two openings g and hot suitable size to admit of the passage respectively of'a main oil supply and of apilot oil supply, and in the wall Zm of chamber 5 are two similar openings 9' in alignment with the openings 9 and 7b. i v

In the wall ace of the chamber a are two openings 5 and 7' of suitable size to admit of the passage respectively of a main steam supply and of a pilot steam supply, and in the wall 500 of chamber 5 are two similar openings 11' and j. The centres of all the openingsreferred to are equidistant from the centreline of the cages. 7

V The valve or'disc 0 has a series of openings 0, 0 0 0*," corresponding respectively to the main oil, pilot oil, main steam, and pilot steam openings in the cages, and these openings in the valve'are so disposed that when the'valve occupies the position shewn in Flg. 1 communication between the reception and delivery chambers is cutoff; when the valve is rotated to the position indicated by the dotted line position B of the operating handle 0x, the openings 0 and 0 are presented opposite the openings h, h and 6,71 respectively to open up the pilot oil and pilot steam communications between the reception and delivery cages and when the valve is further rotated to the position B, the openings 0 and 0 are presented opposite the openings 9, g and j, j respectively to open up the main oil and steam communications between the reception and delivery cages. It will be apparent that in moving to position 13 to openup thepilot oil and steam supply, the valve shuts off themain oiland steam supply.

I Suitable means are provided to enable the valve .to be held in either of the positions refer-redto, or in intermediate positions in wh'icl'i'themain oil and steam supplies or the pilot oil and steam supplies will'be only partially opened up. A convenient method .of making such provision is to provide a fixed quadrant or segment 7:;

having a finely toothed or serrated surface 70'' adapted to be engaged by "a-Qsuitable spring actuated member Z carried by the operating handle 000 of the valve. It will be obvious, however, that other equivalent means may be adopted or devised for adjustablyholding the valve in desired position.

' A communication 'm; leads 'from' a suitable steam supply into" the oil reception chamber a such communication being controlled by a" suitable valve or cock, not

shewn, when the valve :is in the closed position, opening up of this communication a enables steam to be blown back through the oil reception chamber and "the oil pipe a to the oil tank, to clear away any obstructions.

' If the valve is moved to either the main 'or pilot delivery position with the com- 1111111103131011 m open, steam will be blown through chamber 6 and will'clear away 7 obstructions in'said chamber or in the oil v delivery pipe leading to the burners.

The device is very compact; the oil in passing through chambers at and b is V heated by contact with the steam chambers a and b the blow-back pipe menables all obstructionsin the oil supply chambers or deliverypipesto be cleared away; and

the arrangement of themain and pilot oil and steam s'uppliesin combination with cheffine adjustment device enables the correct I supplies of oil and steam to maintain the desired temperature without fluctuation to be provided.

I The details of construction of thedevice may be varied.

Having thus described our invention,

what we claim as new and desire to secure by Letters Patent is 1. A combined firing valve and heater,'for V I oil fuel burning installations comprising two cages or members each divided into two chambers, the chambers of one member being connected respectivelyto an, oil supply and and delivery chambers, substantially asset 1 forth. 1 i

2. The combination with a firing valve and heater according to claim v1 of means to hold the rotary valve in-adjusted position, substantially as set: forth.

3; The combination with a firing valve and heater according to claim 1 of a controlled communication between the .oil reception chamber and a steam supply whereby according to the position of the rotary valve 116 steam can either be blownba'ck through the oil supply pipe or through the oil-delivery chamber and the oil delivery pipe to the burner, substantially as set forth;

In testimony whereof weafiix our signa- 120 tures.

JAMES ODONNELL. 7 PETER FRASER MoLEOD. 

